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UNITED STATES PATENT OFFICE.

EDWARD R. SCOTT, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO A HIMSELE AND W. L. GERMON, OF SAME PLACE.

APPARATUS FOR PRODUCING VIGNETTE PHOTOGRAPHS.

Specification forming part of Letters Patent No. 35,857, dated July 8, 1862.

To aZZ whom, it may concern.-

ABe it known that I, EDWARD R. SCOTT, of Philadelphia, State of Pennsylvania, have made certain new and useful Improvements in Apparatus for Producing Vignette Photographs; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure l represents a top view of my apparatus with the ground glass removed. Fig. 2 represents the same with the ground glass in its proper position. Fig. 8 is a sectional view, and Fig. 4 is au inside view, of the apparatus.

This improvement consists in having the plate, with the opening admitting the light, placed at a slight distance above the negative, and in the use of a slide to cut off the lower portion of the picture, if desired.

My apparatus is thus constructed: It consists of a simple metallic frame, A A, having slightly-elevated sides B B. The top of these sides forms a-groove in which the metallic plate C slides. This plate is provided with an oval opening, D, corresponding to the size of the vignette desired. Above this metallic plate a ground-glass plate, E, slides. In order to cut off the lower portion of the vignette and the display of the body, a small metallic piece, m, is so arranged that it may be slid over more or less of the lower portion of the oval, and by Valso resting upon the negative prevents the light from acting on the portion covered by it. The ground glass is much more effective if ground on both sides. A number of plates 'with different-sized oval openings should be provided, so as to forni any sized vignette.

This apparatus is used as follows: The propared paper andthe glass negative are placed inthe ordinary printing-frame. This apparatus is firmly fixed in position by means of the screws m and a and sliding T-shaped piece P. A plate having the proper-sized opening` is selected and placed in the apparatus, with the ground glass over it. The light passing through this opening prints the picture, and, as the plate through the opening in which the light passes is slightly elevated above the glass negative, the light is diffused over the negative and the vignette effect produced,and by the light passing through the ground glass the effect is still further increased and all sharp dark lines on the outer edge of the picture avoided.

Having thus described my improved apparatus, what I claim as my invention, and desire to secure by Letters Patent, is

1. The combination of the frame A A, with elevated sides B B, sliding plate C, oval opening D, and ground glass E.

2. Making the plate C, which contains the oval opening, slightly elevated above the glass negative.

3. The use of a sliding plate, X, to cut off the lower portion of the oval, if desired.

EDWD. R. SCOTT.

XVitiiesses:

DANIEL STONE, W. ULRIo CHILD. 

